Dour

austero

(stern, harsh and forbidding)

despiadado

(unyielding and obstinate)

duro

(stern, harsh and forbidding)

inflexible

(unyielding and obstinate)

lúgubre

(expressing gloom or melancholy)

melancólico

(expressing gloom or melancholy)

obstinado

(unyielding and obstinate)

rigorista

(stern, harsh and forbidding)

riguroso

(stern, harsh and forbidding)

rígido

(unyielding and obstinate)

severo

(stern, harsh and forbidding)

taciturno

(expressing gloom or melancholy)

terco

(unyielding and obstinate)